Exercise machine



FIG. 1 is a front perspective view of an exercise machine showing ournew design;

FIG. 2 is a rear perspective view thereof;

FIG. 3 is a front view thereof;

FIG. 4 is a side elevational view thereof;

FIG. 5 is a top plan view thereof;

FIG. 6 is a view similar to FIG. 1, but with the arms spread;

FIG. 7 is a view similar to FIG. 3, but with the arms spread; and,

FIG. 8 is a view similar to FIG. 5, but with the arms spread.

The ornamental design for an exercise machine, as shown.